TWI739431B - Data transmission system and data transmission method thereof - Google Patents
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Abstract
Description
本發明係有關於一種運算科學,特別係關於一種按行緩衝器記憶體分配之判定運算的資料傳輸系統。The present invention relates to a computing science, and particularly relates to a data transmission system for determining operations based on row buffer memory allocation.
近年來,智慧影像感測技術應用近來發展迅速,除了過去市場所熟悉的影像感測器由智慧型手機逐步延伸至汽車、工業、醫療等領域。其中,互補式金屬氧化物半導體影像感測器(CMOS Image Sensor, CIS)為市面上較常使用的影像感測器類型。就目前而言,一般在主從式傳輸架構下作為從裝置的CIS影像感測器是透過數位的形式來儲存像素單元輸出的感測信號,因此一般此類的CIS影像感測器需搭配有數位圖框暫存器(Digital Frame buffer)。In recent years, the application of smart image sensing technology has developed rapidly, except that image sensors familiar to the market in the past have gradually extended from smart phones to automotive, industrial, medical and other fields. Among them, the complementary metal oxide semiconductor image sensor (CMOS Image Sensor, CIS) is the most commonly used image sensor type on the market. At present, the CIS image sensor that is generally used as a slave device under the master-slave transmission structure stores the sensing signal output by the pixel unit in a digital format. Therefore, this type of CIS image sensor generally needs to be equipped with Digital frame buffer (Digital Frame buffer).
然而,隨著電子裝置微型化的趨勢下,搭配有數位圖框暫存器的CIS影像感測器無法有效地縮減體積,以智慧型手機為例,過去智慧型手機只有前後單鏡頭的配備時,只需搭載2顆CIS影像感測器,但近年來智慧型手機功能大幅增加,在前鏡頭需搭載3D感測功能的情況下,目前市面上之智慧型手機至少需搭載4顆CIS影像感測器。有鑑於此,如何節省CIS影像感測器的空間及成本則為研發人員應解決的問題之一。However, with the trend of miniaturization of electronic devices, CIS image sensors with digital frame registers cannot effectively reduce the size. Take smart phones as an example. In the past, smart phones were only equipped with front and rear single lenses. , It only needs to be equipped with 2 CIS image sensors, but in recent years, the functions of smart phones have increased significantly. When the front lens needs to be equipped with 3D sensing functions, the current smart phones on the market need to be equipped with at least 4 CIS image sensors. Detector. In view of this, how to save the space and cost of the CIS image sensor is one of the problems that R&D personnel should solve.
本發明的目的係提供一種資料傳輸系統,該資料傳輸系統搭配根據本發明之方法,將原本需要數位圖框暫存器的影像感測器,縮減至僅需要大於或等於兩倍的該等行類比數位轉換器(line analog-to-digital converter)之數量的行緩衝器記憶體(line buffer memory)即能執行影像感測技術,有效減少影像感測器的空間以及成本。The object of the present invention is to provide a data transmission system that, in combination with the method according to the present invention, reduces the image sensor that originally required a digital frame register to only more than or equal to twice the number of rows. The line buffer memory (line buffer memory) of the line analog-to-digital converter can execute the image sensing technology, effectively reducing the space and cost of the image sensor.
本發明的另一目的係提供一種資料傳輸系統,該資料傳輸系統藉由調整行類比數位轉換器轉換影像資料行之頻率,使行類比數位轉換器不再產生虛擬影像資料行,大幅增加行類比數位轉換器轉換之效率並提升根據本發明之資料傳輸系統的適用性。Another object of the present invention is to provide a data transmission system. The data transmission system adjusts the frequency at which the line analog-to-digital converter converts image data lines so that the line-analog-digital converter no longer generates virtual image data lines and greatly increases the line-analog data. The conversion efficiency of the digital converter improves the applicability of the data transmission system according to the present invention.
為達上述目的,本發明提供一種資料傳輸系統,包括:類比影像圖框緩衝器(analog image frame buffer)、行類比數位轉換器、行緩衝器記憶體以及介面;類比影像圖框緩衝器,其係以類比訊號儲存自一影像感測器產生的複數影像資料行,該等影像資料行包括一第一影像資料行以及一第二影像資料行;至少一行類比數位轉換器,其係與該類比影像圖框緩衝器電性連接,該等行類比數位轉換器;至少二行緩衝器記憶體,其係與該行類比數位轉換器電性連接,並將轉換為數位信號之該等影像資料行儲存於該等行緩衝器記憶體,該等行緩衝器記憶體包括一第一行緩衝器記憶體以及一第二行緩衝器記憶體;一介面,其係與該等行緩衝器記憶體電性連接,該介面依據一主裝置提供之指令,依序輸出該等影像資料行;其中,該等行緩衝器記憶體之數量大於或等於兩倍的該等行類比數位轉換器之數量。To achieve the above objective, the present invention provides a data transmission system, including: an analog image frame buffer (analog image frame buffer), a line-analog-to-digital converter, a line buffer memory and an interface; an analog image frame buffer, which A plurality of image data rows generated from an image sensor are stored with analog signals. The image data rows include a first image data row and a second image data row; at least one row of analog-to-digital converters is related to the analog The image frame buffer is electrically connected to the line analog-to-digital converters; at least two lines of buffer memory are electrically connected to the line analog-to-digital converter and convert the image data lines into digital signals Stored in the line buffer memories, the line buffer memories include a first line buffer memory and a second line buffer memory; an interface that is connected to the line buffer memories In a sexual connection, the interface sequentially outputs the image data lines according to the instructions provided by a host device; wherein the number of the line buffer memory is greater than or equal to twice the number of the line analog-to-digital converters.
較佳地,根據本發明之類比影像圖框緩衝器可以與一像素陣列(pixel array)結合,亦即類比影像圖框緩衝器與像素陣列佔據同一空間,如此一來,相比於使用數位影像圖框緩衝器時,數位影像圖框緩衝器與像素陣列為分別設置進而需要額外的空間,類比影像圖框緩衝器藉由與像素陣列結合,有效減少影像感測器的空間。Preferably, the analog image frame buffer according to the present invention can be combined with a pixel array, that is, the analog image frame buffer and the pixel array occupy the same space. As a result, compared to using digital images In the case of the frame buffer, the digital image frame buffer and the pixel array are separately provided and additional space is required. The analog image frame buffer is combined with the pixel array to effectively reduce the space of the image sensor.
較佳地,根據本發明之資料傳輸系統,其中該至少一行類比數位轉換器轉換該等影像資料行的頻率可以為定值,並且在該等行緩衝器記憶體不具有空間儲存該等影像資料行之前,該至少一行類比數位轉換器所轉換之該等影像資料行為虛擬影像資料行(dummy ADC)。Preferably, according to the data transmission system of the present invention, the frequency at which the at least one analog-to-digital converter converts the image data lines can be a fixed value, and the line buffer memory does not have space to store the image data Before the row, the at least one row of the image data converted by the analog-to-digital converter is a virtual image data row (dummy ADC).
較佳地,根據本發明之資料傳輸系統,其中該至少一行類比數位轉換器轉換該等影像資料行的頻率可以不為定值。Preferably, according to the data transmission system of the present invention, the frequency at which the at least one line of analog-to-digital converter converts the image data lines may not be a fixed value.
較佳地,根據本發明之資料傳輸系統,其中該介面依序輸出該等影像資料行時,該主裝置以輪詢(Polling)的方式確認該等行緩衝器記憶體已經就緒。Preferably, according to the data transmission system of the present invention, when the interface sequentially outputs the image data lines, the host device confirms that the line buffer memory is ready by means of polling.
較佳地,根據本發明之資料傳輸系統,其中該介面依序輸出該等影像資料行時,該主裝置不需以輪詢的方式確認該等行緩衝器記憶體是否已經就緒,而是可以連續不中斷的接收資料。Preferably, according to the data transmission system of the present invention, when the interface sequentially outputs the image data rows, the host device does not need to poll whether the row buffer memory is ready, but can Receive data continuously without interruption.
較佳地,根據本發明之資料傳輸系統,其可以進一步括至少二多路復用器,該等多路復用器包括一第一多路復用器以及一第二多路復用器;其中該第一多路復用器設置於該行類比數位轉換器與該等行緩衝器記憶體之間,該第一多路復用器將該第一影像資料行傳輸至該等緩衝器記憶體中的其中之一,並且將該第二影像資料行傳輸至該等行緩衝器記憶體中的另一個;該第二多路復用器設置於該等行緩衝器記憶體與該介面之間,該第二多路復用器根據該行類比數位轉換器轉換之順序,依序將該等影像資料行傳輸至該介面。Preferably, the data transmission system according to the present invention may further include at least two multiplexers, the multiplexers including a first multiplexer and a second multiplexer; The first multiplexer is disposed between the line analog-to-digital converter and the line buffer memories, and the first multiplexer transmits the first image data line to the buffer memories The second image data line is transmitted to the other of the line buffer memories; the second multiplexer is arranged between the line buffer memories and the interface Meanwhile, the second multiplexer sequentially transmits the image data lines to the interface according to the conversion sequence of the line analog-to-digital converter.
較佳地,根據本發明之資料傳輸系統,其中該介面可以為串列周邊介面(SPI),但非僅限於此。Preferably, according to the data transmission system of the present invention, the interface can be a serial peripheral interface (SPI), but it is not limited to this.
又,為達上述目的,本發明係根據上述資料傳輸系統為基礎,進一步提供一種執行資料傳輸系統的方法,其係包含有:一儲存步驟,藉由一類比影像圖框緩衝器,以類比訊號儲存自一影像感測器產生的複數影像資料行,其中,該等影像資料行包括一第一影像資料行以及一第二影像資料行;一轉換步驟,藉由至少一行類比數位轉換器,將該等影像資料行從類比訊號轉換為數位訊號;一傳輸步驟,將數位訊號之該第一影像資料行傳輸並儲存於至少二行緩衝器記憶體中的其中之一;一暫存步驟,將數位訊號之該第二影像資料行傳輸並儲存於該至少二行緩衝器記憶體中的其中之一;以及一輸出步驟,一介面依據一主裝置提供之指令,依序輸出該等影像資料行。In addition, in order to achieve the above objective, the present invention is based on the above data transmission system, and further provides a method for implementing the data transmission system, which includes: a storage step, with an analog image frame buffer, and analog signal Store a plurality of image data rows generated by an image sensor, wherein the image data rows include a first image data row and a second image data row; a conversion step, with at least one row of analog-to-digital converters, The image data rows are converted from analog signals to digital signals; a transmission step, the first image data row of the digital signal is transmitted and stored in one of at least two rows of buffer memories; and a temporary storage step is The second image data line of the digital signal is transmitted and stored in one of the at least two lines of buffer memory; and an output step, an interface sequentially outputs the image data lines according to instructions provided by a host device .
較佳地,根據本發明之資料傳輸系統,其可以於該暫存步驟,將數位訊號之該第一影像資料行,從該第一行緩衝器記憶體傳輸並儲存於該第二行緩衝器記憶體。Preferably, according to the data transmission system of the present invention, in the temporary storage step, the first image data line of the digital signal can be transferred from the first line buffer memory and stored in the second line buffer Memory.
較佳地,根據本發明之資料傳輸系統,其可以於該暫存步驟,將數位訊號之該第二影像資料行傳輸並儲存於該第二行緩衝器記憶體;並且於該轉換步驟及該傳輸步驟之間,進一步包括一選擇步驟,其係藉由該多路復用器,將數位訊號之該等影像資料行根據該行類比數位轉換器轉換之順序,依序傳輸至該介面。Preferably, according to the data transmission system of the present invention, in the temporary storage step, the second image data line of the digital signal can be transmitted and stored in the second line buffer memory; and in the conversion step and the Between the transmission steps, there is further included a selection step, which uses the multiplexer to sequentially transmit the image data rows of the digital signal to the interface according to the conversion sequence of the row analog-to-digital converter.
綜上,本發明所提供之資料傳輸系統及其資料傳輸方法,主要利用本發明之資料傳輸系統並搭配其方法,將原本需要數位圖框暫存器的影像感測器,縮減至僅需要2個行緩衝器記憶體即能執行影像感測技術,並藉由調整行類比數位轉換器轉換影像資料行之頻率,使行類比數位轉換器不再產生虛擬影像資料行,達到減少使用空間、廣泛適用性以及節省成本等目的。In summary, the data transmission system and data transmission method provided by the present invention mainly utilizes the data transmission system of the present invention and its method to reduce the image sensor that originally required a digital frame register to only 2 A line buffer memory can execute the image sensing technology, and by adjusting the frequency of the line analog-to-digital converter to convert the image data line, the line analog-to-digital converter no longer generates the virtual image data line, so as to reduce the use space and wide Applicability and cost-saving purposes.
爲使熟悉該項技藝人士瞭解本發明之目的、特徵及功效,茲藉由下述具體實施例,並配合所附之圖式,對本發明詳加說明如下。In order to enable those skilled in the art to understand the purpose, features, and effects of the present invention, the following specific embodiments and accompanying drawings are used to explain the present invention in detail as follows.
以下配合圖式及元件符號對本發明的實施方式作更詳細的說明,俾使其所屬技術領域中具有通常知識者在研讀本說明書後能據以實施。The following describes the embodiments of the present invention in more detail with drawings and component symbols, so that those with ordinary knowledge in the technical field can implement them after studying this specification.
然而,本發明不限於本文所公開的實施例,而是將以各種形式實現。However, the present invention is not limited to the embodiments disclosed herein, but will be implemented in various forms.
以下實施例僅作為示例提供,使得所屬技術領域中具有通常知識者可以完全理解本發明的公開內容和本發明所公開的範圍。The following embodiments are only provided as examples, so that persons with ordinary knowledge in the technical field can fully understand the disclosure of the present invention and the scope of the present invention.
因此,本發明將僅由所附申請專利範圍限定。Therefore, the present invention will only be limited by the scope of the attached patent application.
用於描述本發明的各種實施例的附圖中,所示出的形狀、尺寸、比率、數量等僅僅為示例性,並且本發明不限於此。In the drawings used to describe various embodiments of the present invention, the shapes, sizes, ratios, numbers, etc. shown are merely exemplary, and the present invention is not limited thereto.
在本說明書中,相同的附圖標記通常表示相同的元件。In this specification, the same reference numerals generally denote the same elements.
除非另有明確說明,否則對單數的任何引用可以包含複數。Unless expressly stated otherwise, any reference to the singular may include the plural.
圖1為根據本發明之資料傳輸系統的示意圖。如圖1所示,根據本發明之資料傳輸系統1包括:類比影像圖框緩衝器11、行類比數位轉換器12、行緩衝器記憶體13以及介面14;其中,該等行緩衝器記憶體13之數量大於或等於兩倍的該等行類比數位轉換器12之數量。Fig. 1 is a schematic diagram of a data transmission system according to the present invention. As shown in FIG. 1, the
具體地,根據本發明之類比影像圖框緩衝器11係以類比訊號儲存自一影像感測器(圖未示)產生的複數影像資料行,該等影像資料行包括一第一影像資料行(row_0)以及一第二影像資料行(row_1)。Specifically, the analog
具體地,根據本發明之類比影像圖框緩衝器11可以與一像素陣列(圖未示)結合,亦即類比影像圖框緩衝器11與像素陣列佔據同一空間。如此一來,相比於使用數位影像圖框緩衝器時,數位影像圖框緩衝器與像素陣列為分別設置進而需要額外的空間,類比影像圖框緩衝器11藉由與像素陣列結合,有效減少影像感測器的空間。Specifically, the analog
具體地,根據本發明之行類比數位轉換器12係與該類比影像圖框緩衝器11電性連接,該行類比數位轉換器12將該第一影像資料行以及該第二影像資料行從類比訊號轉換為數位訊號。Specifically, the line analog-to-
具體地,根據本發明之行緩衝器記憶體13係與該行類比數位轉換器12電性連接,並將轉換為數位信號之該等影像資料行儲存於該等行緩衝器記憶體13。Specifically, the
具體地,根據本發明之介面14係與該等行緩衝器記憶體13電性連接,該介面14依據一主裝置15提供之指令,依序輸出該等影像資料行,並且該介面14可以為串列周邊介面(SPI),但非僅限於此。Specifically, the
需要進一步說明的是,本發明之資料傳輸系統1可以具有複數行類比數位轉換器12,該資料傳輸系統1具有複數數位轉換器12的好處在於,可以有效增加將該等影像資料行從類比訊號轉換為數位訊號的效率,然而如此一來將同時增加行緩衝器記憶體13的數量,使得該資料傳輸系統1佔據較大的空間及增加成本,因此使用者可視不同的需求及目的調整行類比數位轉換器12以及行緩衝器記憶體13的數量。It should be further explained that the
請參閱圖2,並搭配圖1所示,圖2為說明執行本發明之資料傳輸系統之方法的步驟流程圖,本發明以上述之資料傳輸系統1為基礎,進一步提供一種資料傳輸系統1的執行方法。係包含下列步驟:Please refer to FIG. 2 in conjunction with FIG. 1. FIG. 2 is a flowchart illustrating the steps of the method of implementing the data transmission system of the present invention. The present invention is based on the above-mentioned
首先,於儲存步驟S1,藉由該類比影像圖框緩衝器11,以類比訊號儲存自該影像感測器產生的複數影像資料行。First, in the storing step S1, the analog
接著,進入轉換步驟S2,藉由該等行類比數位轉換器12,將該等影像資料行從類比訊號轉換為數位訊號。Then, proceed to the conversion step S2, by using the line analog-to-
之後,進入傳輸步驟S3,將數位訊號之該第一影像資料行傳輸並儲存於該等行緩衝器記憶體13中的其中之一。After that, it enters into the transmission step S3 to transmit and store the first image data line of the digital signal in one of the
隨後,進入暫存步驟S4,將數位訊號之該第二影像資料行傳輸並儲存於該等行緩衝器記憶體13中的另一個。Then, enter the temporary storage step S4 to transmit and store the second image data line of the digital signal in the other one of the
最後,進入輸出步驟S5,介面14依據主裝置15之指令,將數位訊號之影像資料行根據行類比數位轉換器12轉換之順序,依序由該介面14輸出。Finally, in the output step S5, the
如此一來,根據本發明所提供之資料傳輸系統並搭配其資料傳輸方法,將原本需要數位圖框暫存器的影像感測器,縮減至僅需要2個行緩衝器記憶體13即能執行影像感測技術,有效減少影像感測器的空間以及成本。In this way, according to the data transmission system provided by the present invention and in combination with the data transmission method, the image sensor that originally required a digital frame register is reduced to only two
為供進一步瞭解本發明構造特徵、運用技術手段及所預期達成之功效,茲將本發明之實施例加以敘述,相信當可由此而對本發明有更深入且具體瞭解。In order to further understand the structural features of the present invention, the technical means used and the expected effects, the embodiments of the present invention are described here, and it is believed that a more in-depth and specific understanding of the present invention can be obtained from this.
(第1實施例) 以下,參照圖式,說明本發明的資料傳輸系統的第一實施例的實施形態。(First embodiment) Hereinafter, with reference to the drawings, an embodiment of the first embodiment of the data transmission system of the present invention will be described.
圖3為根據本發明第一實施例之資料傳輸系統的示意圖。如圖3所示,根據本發明第一實施例之資料傳輸系統1包括:類比影像圖框緩衝器11、行類比數位轉換器12、第一行緩衝器記憶體131、第二行緩衝器記憶體132以及介面14。FIG. 3 is a schematic diagram of a data transmission system according to the first embodiment of the present invention. As shown in FIG. 3, the
具體地,根據本發明第一實施例之類比影像圖框緩衝器11係以類比訊號儲存自影像感測器產生的複數影像資料行,該等影像資料行包括第一影像資料行以及第二影像資料行。Specifically, the analog
具體地,根據本發明第一實施例之行類比數位轉換器12係與該類比影像圖框緩衝器11電性連接,該行類比數位轉換器12將該第一影像資料行以及該第二影像資料行從類比訊號轉換為數位訊號。Specifically, the line analog-to-
具體地,根據本發明第一實施例之第一行緩衝器記憶體131以及第二行緩衝器記憶體132,兩者係與行類比數位轉換器12電性連接,並將轉換為數位信號之該等影像資料行儲存於該等行緩衝器記憶體。Specifically, according to the first embodiment of the present invention, the first
具體地,根據本發明第一實施例之介面14係與該等行緩衝器記憶體電性連接,介面14依據一主裝置15提供之指令,依序輸出該等影像資料行。Specifically, the
具體地,根據本發明第一實施例之資料傳輸系統1,其中該介面14可以為串列周邊介面,但非僅限於此。Specifically, according to the
請參閱圖4,並搭配圖3所示,圖4為說明執行本發明第一實施例的資料傳輸系統之方法的步驟流程圖,本發明以上述第一實施例之資料傳輸系統1為基礎,進一步提供一種資料傳輸系統1的執行方法。係包含下列步驟:Please refer to FIG. 4 in conjunction with FIG. 3. FIG. 4 is a flowchart illustrating the steps of the method for implementing the data transmission system of the first embodiment of the present invention. The present invention is based on the
儲存步驟S1:藉由該類比影像圖框緩衝器11,以類比訊號儲存自該影像感測器產生的複數影像資料行。Storage step S1: using the analog
轉換步驟S2:藉由該等行類比數位轉換器12,將該等影像資料行從類比訊號轉換為數位訊號。Conversion step S2: by the line analog-to-
傳輸步驟S3:將數位訊號之該第一影像資料行傳輸並儲存於該第一行緩衝器記憶體131 。Transmission step S3: The first image data line of the digital signal is transmitted and stored in the first
暫存步驟S4:將數位訊號之該第一影像資料從該第一行緩衝器記憶體131傳輸至該第二行緩衝器記憶體132,並儲存於該第二行緩衝器記憶體132。Temporary storage step S4: the first image data of the digital signal is transferred from the first
輸出步驟S5:介面14依據主裝置15之指令,將數位訊號之影像資料行根據該等行類比數位轉換器12轉換之順序,依序由該介面14輸出。Output step S5: The
請參閱圖5所示,並搭配圖3及圖4所示,圖5為根據本發明第一實施例之資料傳輸系統的信號時序圖。本發明以上述第一實施例之資料傳輸系統1為基礎,並搭配上述之方法的時序圖說明如下。Please refer to FIG. 5 in conjunction with FIG. 3 and FIG. 4. FIG. 5 is a signal timing diagram of the data transmission system according to the first embodiment of the present invention. The present invention is based on the
首先,藉由該類比影像圖框緩衝器11執行儲存步驟S1,以類比訊號儲存自影像感測器產生的複數影像資料行。First, the storage step S1 is executed by the analog
接著,藉由該等行類比數位轉換器12執行轉換步驟S2,於時間點T0處開始將影像資料行從類比訊號轉換為數位訊號。Then, the conversion step S2 is executed by the line analog-to-
之後,執行傳輸步驟S3,將轉換為數位訊號之第一影像資料行,於時間點T1處儲存於第一行緩衝器記憶體131。After that, the transmission step S3 is executed to store the first image data line converted into a digital signal in the first
隨後,執行暫存步驟S4,於時間點T2將儲存於第一行緩衝器記憶體131的數位訊號之第一影像資料行,暫存至第二行緩衝器記憶體132。Subsequently, the temporary storage step S4 is executed, and the first image data line of the digital signal stored in the first
最後,介面14依據主裝置15之指令執行輸出步驟S5,於時間點T3將數位訊號之第一影像資料行輸出,並於時間點T4將數位訊號之第二影像資料行輸出。Finally, the
需要進一步說明的是,一般來說行類比數位轉換器12的轉換頻率為定值,如圖5所示,例如ADC_r0及ADC_r1的時間長度相等且為定值,且ADC_r1及ADC_r2的時間長度相等且為定值等,然而由於根據本發明之介面14為主從式介面,介面14必須根據主裝置15之指令將數位訊號之該等影像資料行輸出,因此在行類比數位轉換器12的轉換頻率為定值的情況下,在介面14輸出下一個影像資料行之前(亦即在時間點T4之前),第二行緩衝器記憶體132內所儲存的資料不能從r0更新為r1,且第一行緩衝器記憶體131內所儲存的資料不能從r1更新為r2。如上所述,上述情形將導致行類比數位轉換器12在上述期間(亦即時間點T3至時間點T4之間),不能將類比影像圖框緩衝器11中的r3進行類比數位轉換進而產生ADC_r3,其原因在於當處於時間點T3至時間點T4之間時,該ADC_r2的資料尚未傳輸至第一行緩衝器記憶體131,因此必須使用虛擬類比數位轉換(dummy ADC)以保持行類比數位轉換器12之轉換頻率為定值,亦即行類比數位轉換器12於時間點T3至時間點T5所轉換之該等影像資料行為虛擬影像資料行,並且該等虛擬影像資料行不會由介面14輸出。如此一來,藉由引入虛擬類比數位轉換,本發明可以使每次的類比數位轉換都是規律發生,以避免不同訊號間的非預期干擾。It should be further explained that, generally speaking, the conversion frequency of the line analog-to-
此外,在主從式介面下,當主裝置15接收完一資料行後,此時介面14(亦即從裝置)在某些情況下可能尚未完成下一行資料的傳輸。因此,主裝置15需要以輪詢(Polling)的方式確認行緩衝器記憶體13已經就緒。In addition, in a master-slave interface, after the
然而本發明不限於此,圖6為根據本發明第一實施例之資料傳輸系統的另一信號時序圖;如圖6所示,根據本發明之行類比數位轉換器12的轉換頻率可以不為定值,在此需說明的是,當類比數位轉換的頻率或時間長度不為定值時,則所得到的影像將會發生明亮程度不一致的現象,習知的行類比數位轉換器12必須保證轉換頻率為定值的原因在於,必須確保所呈現之影像的明亮程度一致,然而根據本發明之資料傳輸系統主要作為影像辨識之應用,影像明亮程度的變化對於影像辨識之影響甚微,因此該行類比數位轉換器12轉換之頻率可以不為定值,而是可以根據介面14的資料傳輸情況進行調整。如此一來,根據本發明之行類比數位轉換器12可以省去(或減少)進行虛擬影像資料行的轉換,大幅增加行類比數位轉換器12轉換之效率,並減少介面14資料傳輸的複雜度,例如主裝置不需以輪詢(Polling)的方式確認行緩衝器記憶體是否已經就緒,而是可以連續不中斷的接收資料,因此將有效提升本發明的適用性。However, the present invention is not limited to this. FIG. 6 is another signal timing diagram of the data transmission system according to the first embodiment of the present invention; as shown in FIG. 6, the conversion frequency of the line analog-to-
(第2實施例)(Second embodiment)
請參閱圖7所示,圖7為根據本發明第二實施例之資料傳輸系統的示意圖。第二實施例相較於第一實施例,第二實施例的主要結構差異在於,該資料傳輸系統1進一步包括至少二多路復用器16,該等多路復用器16包括一第一多路復用器161以及一第二多路復用器162。其中,該第一多路復用器161設置於該行類比數位轉換器12與該等行緩衝器記憶體13之間,該第一多路復用器161將該第一影像資料行,傳輸至該第一緩衝器記憶體131與該第二緩衝器記憶體132中的其中之一,接著該第一多路復用器161將該第二影像資料行,傳輸至該第一緩衝器記憶體131與該第二緩衝器記憶體132中的另一個;該第二多路復用器162設置於該等行緩衝器記憶體13與該介面14之間,該第二多路復用器162根據該行類比數位轉換器12轉換之順序,依序將該等影像資料行傳輸至該介面14。Please refer to FIG. 7, which is a schematic diagram of a data transmission system according to a second embodiment of the present invention. Compared with the first embodiment, the main structural difference of the second embodiment is that the
藉此,第二實施例不僅能達到第一實施例之功效,亦能提供不同的結構,以提升本發明的適用性。In this way, the second embodiment can not only achieve the effects of the first embodiment, but also provide a different structure to enhance the applicability of the present invention.
請參閱圖8,並搭配圖7所示,圖8為說明執行本發明第二實施例的資料傳輸系統之方法的步驟流程圖。本發明以上述第二實施例之資料傳輸系統1為基礎,進一步提供一種資料傳輸系統1的執行方法。係包含下列步驟:Please refer to FIG. 8 in conjunction with FIG. 7. FIG. 8 is a flowchart illustrating the steps of the method for implementing the data transmission system according to the second embodiment of the present invention. The present invention is based on the
儲存步驟S1’:藉由該類比影像圖框緩衝器11,以類比訊號儲存自該影像感測器產生的複數影像資料行。Storage step S1': using the analog
轉換步驟S2’:藉由該等行類比數位轉換器12,將該等影像資料行從類比訊號轉換為數位訊號。Conversion step S2': by the line analog-to-
傳輸步驟S3’:藉由第一多路復用器161將數位訊號之該第一影像資料行,傳輸並儲存於該第一緩衝器記憶體131與該第二緩衝器記憶體132中的其中一個。Transmission step S3': the first image data line of the digital signal is transmitted and stored in the
暫存步驟S4’:藉由第一多路復用器161將數位訊號之該第二影像資料傳輸並儲存於該第一緩衝器記憶體131與該第二緩衝器記憶體132中的另一個。Temporary storage step S4': the second image data of the digital signal is transmitted by the
選擇步驟S5’:藉由第二多路復用器162將數位訊號之該等影像資料行根據該等行類比數位轉換器12轉換之順序,依序傳輸至該介面14。Selection step S5': The
輸出步驟S6’:介面14依據主裝置15之指令,將數位訊號之影像資料行根據該等行類比數位轉換器12轉換之順序,依序由該介面14輸出。Output step S6': The
請參閱圖9所示,並搭配圖7及圖8所示,圖9為根據本發明第二實施例之資料傳輸系統的信號時序圖。本發明以上述第二實施例之資料傳輸系統1為基礎,並搭配上述之方法的時序圖說明如下。Please refer to FIG. 9 in conjunction with FIG. 7 and FIG. 8. FIG. 9 is a signal timing diagram of the data transmission system according to the second embodiment of the present invention. The present invention is based on the
首先,藉由該類比影像圖框緩衝器11執行儲存步驟S1’,以類比訊號儲存自影像感測器產生的複數影像資料行。Firstly, the storage step S1' is executed by the analog
接著,藉由該等行類比數位轉換器12執行轉換步驟S2’,於時間點T0處開始將影像資料行從類比訊號轉換為數位訊號。Then, the line-analog-to-
再接著,藉由第一多路復用器161執行傳輸步驟S3’,將轉換為數位訊號之第一影像資料行,於時間點T1處儲存於第一行緩衝器記憶體131。Then, the
之後,藉由第一多路復用器161執行暫存步驟S4’,將轉換為數位訊號之第二影像資料行,於時間點T2處暫存於第二行緩衝器記憶體132。After that, the
隨後,藉由第二多路復用器162執行選擇步驟S5’,將第一影像資料行傳輸至該介面14。Subsequently, the
最後,介面14依據主裝置15之指令執行輸出步驟S6’,於時間點T3將數位訊號之第一影像資料行輸出,並於時間點T4將數位訊號之第二影像資料行輸出。Finally, the
需要進一步說明的是,一般來說行類比數位轉換器12的轉換頻率為定值,如圖9所示,例如ADC_r0及ADC_r1的時間長度相等且為定值,且ADC_r1及ADC_r2的時間長度相等且為定值等,然而由於根據本發明之介面14為主從式介面,介面14(亦即從裝置)必須根據主裝置15之指令將數位訊號之該等影像資料行輸出,因此在行類比數位轉換器12的轉換頻率為定值的情況下,在介面14輸出下一個影像資料行之前(亦即在時間點T4之前),行類比數位轉換器12必須使用虛擬類比數位轉換,以保持行類比數位轉換器12之轉換頻率為定值,亦即行類比數位轉換器12於時間點T3至時間點T5所轉換之該等影像資料行為虛擬影像資料行,並且該等虛擬影像資料行不會由介面14輸出。如此一來,藉由引入虛擬類比數位轉換,本發明可以使每次的類比數位轉換都是規律發生,以避免不同訊號間的非預期干擾。It should be further explained that, generally speaking, the conversion frequency of the line analog-to-
此外,在主從式介面下,當主裝置15接收完一資料行後,此時介面14在某些情況下可能尚未完成下一行資料的傳輸。因此,主裝置15需要以輪詢(Polling)的方式確認行緩衝器記憶體13已經就緒。In addition, in a master-slave interface, after the
然而本發明不限於此,圖10為根據本發明第二實施例之資料傳輸系統的另一信號時序圖;如圖10所示,根據本發明之行類比數位轉換器12的轉換頻率可以不為定值,在此需說明的是,當類比數位轉換的頻率或時間長度不為定值時,則所得到的影像將會發生明亮程度不一致的現象,習知的行類比數位轉換器12必須保證轉換頻率為定值的原因在於,必須確保所呈現之影像的明亮程度一致,然而根據本發明之資料傳輸系統主要作為影像辨識之應用,影像明亮程度的變化對於影像辨識之影響甚微,因此該行類比數位轉換器12轉換之頻率可以不為定值,而是可以根據介面14的資料傳輸情況進行調整。如此一來,根據本發明之行類比數位轉換器12可以省去(或減少)進行虛擬影像資料行的轉換,大幅增加行類比數位轉換器12轉換之效率,並減少介面14資料傳輸的複雜度,例如主裝置不需以輪詢(Polling)的方式確認行緩衝器記憶體是否已經就緒,而是可以連續不中斷的接收資料,因此將有效提升本發明的適用性。However, the present invention is not limited to this. FIG. 10 is another signal timing diagram of the data transmission system according to the second embodiment of the present invention; as shown in FIG. 10, the conversion frequency of the line analog-to-
藉此,本發明具有以下之實施功效及技術功效:Therefore, the present invention has the following implementation effects and technical effects:
其一,藉由本發明之資料傳輸系統1為基礎,並搭配本發明所提供之資料傳輸方法,將原本需要數位圖框暫存器的影像感測器,縮減至僅需要大於或等於兩倍的行類比數位轉換器12之數量的行緩衝器記憶體13,即能執行影像感測技術,本發明之資料傳輸系統有效減少影像感測器的空間以及成本。Firstly, based on the
其二,根據本發明實施例之資料傳輸系統1,相比於使用數位影像圖框緩衝器時,數位影像圖框緩衝器與像素陣列為分別設置進而需要額外的空間,類比影像圖框緩衝器11藉由與像素陣列結合,本發明之資料傳輸系統有效減少影像感測器的空間。Second, according to the
其三,根據本發明實施例之資料傳輸系統1,僅需藉由第一行緩衝器記憶體131以及第二行緩衝器記憶體132,並搭配本發明所提供之方法即能執行影像感測技術,大幅增加影像感測器的應用範圍。Third, according to the
其四,本發明藉由調整行類比數位轉換器12轉換影像資料行之頻率,使行類比數位轉換器12省去(或減少)產生虛擬影像資料行,大幅增加行類比數位轉換器12轉換之效率並提升本發明之資料傳輸系統的適用性。Fourth, the present invention adjusts the frequency at which the line-analog-to-
以上係藉由特定的具體實施例說明本發明之實施方式,所屬技術領域具有通常知識者可由本說明書所揭示之內容輕易地瞭解本發明之其他優點及功效。The above is a description of the implementation of the present invention through specific specific examples. Those with ordinary knowledge in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification.
以上所述僅為本發明之較佳實施例,並非用以限定本發明之範圍;凡其它未脫離本發明所揭示之精神下所完成之等效改變或修飾,均應包含在下述之專利範圍內。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all other equivalent changes or modifications made without departing from the spirit of the present invention should be included in the following patent scope Inside.
1:資料傳輸系統 11:類比影像圖框緩衝器 12:行類比數位轉換器 13:行緩衝器記憶體 131:第一行緩衝器記憶體 132:第二行緩衝器記憶體 14:介面 15:主裝置 16:多路復用器 161:第一多路復用器 162:第二多路復用器 S1:儲存步驟 S2:轉換步驟 S3:傳輸步驟 S4:暫存步驟 S5:輸出步驟 S1’:儲存步驟 S2’:轉換步驟 S3’:傳輸步驟 S4’:暫存步驟 S5’:選擇步驟 S6’:輸出步驟1: Data transmission system 11: Analog image frame buffer 12: Line analog to digital converter 13: Line buffer memory 131: The first line of buffer memory 132: The second line of buffer memory 14: Interface 15: main device 16: Multiplexer 161: The first multiplexer 162: second multiplexer S1: Storage steps S2: Conversion steps S3: Transmission steps S4: Temporary storage step S5: Output steps S1’: Storage steps S2’: Conversion steps S3’: Transmission steps S4’: Temporary storage step S5’: Selection steps S6’: Output steps
圖1為根據本發明之資料傳輸系統的示意圖; 圖2為說明執行本發明之資料傳輸系統之方法的步驟流程圖; 圖3為根據本發明第一實施例之資料傳輸系統的示意圖; 圖4為說明執行本發明第一實施例的資料傳輸系統之方法的步驟流程圖; 圖5為根據本發明第一實施例之資料傳輸系統的信號時序圖; 圖6為根據本發明第一實施例之資料傳輸系統的另一信號時序圖; 圖7為根據本發明第二實施例之資料傳輸系統的示意圖; 圖8為說明執行本發明第二實施例的資料傳輸系統之方法的步驟流程圖; 圖9為根據本發明第二實施例之資料傳輸系統的信號時序圖; 圖10為根據本發明第二實施例之資料傳輸系統的另一信號時序圖。Figure 1 is a schematic diagram of a data transmission system according to the present invention; 2 is a flowchart illustrating the steps of the method of implementing the data transmission system of the present invention; 3 is a schematic diagram of a data transmission system according to the first embodiment of the present invention; 4 is a flowchart illustrating the steps of the method of implementing the data transmission system of the first embodiment of the present invention; 5 is a signal timing diagram of the data transmission system according to the first embodiment of the present invention; 6 is another signal timing diagram of the data transmission system according to the first embodiment of the present invention; Fig. 7 is a schematic diagram of a data transmission system according to a second embodiment of the present invention; 8 is a flowchart illustrating the steps of a method for implementing the data transmission system of the second embodiment of the present invention; 9 is a signal timing diagram of the data transmission system according to the second embodiment of the present invention; FIG. 10 is another signal timing diagram of the data transmission system according to the second embodiment of the present invention.
1:資料傳輸系統1: Data transmission system
11:類比影像圖框緩衝器11: Analog image frame buffer
12:行類比數位轉換器12: Line analog to digital converter
13:行緩衝器記憶體13: Line buffer memory
14:介面14: Interface
15:主裝置15: main device
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